Germany has developed a lithium battery simulation software

　　It will take time for electric vehicles to achieve a breakthrough, but the battery can achieve a breakthrough soon. At present, lithium batteries are still too expensive and have limited applications. The emergence of a kind of simulation software will accelerate the development process of new material batteries.

　　It will take time for the electric vehicle to achieve a breakthrough, but the battery can achieve an early breakthrough. At present, lithium batteries are still too expensive and have limited applications. The emergence of a kind of simulation software will accelerate the development process of new material batteries.

　　Electric vehicles are an important part of the future automobile market, and the German government and the automobile industry hold the same view. By 2020, Germany will have one million electric buses on the road. The German motor vehicle organization All-German Automobile Club (ADAC) found in a survey that if cost, comfort and safety do not have to be considered, 74% of the respondents are willing to buy electric vehicles, and about 1/3 of the drivers hope that electric vehicles will be more expensive. It can run at least 500 kilometers on a single charge of the battery.

　　But the key problem is that the current number of charging stations and battery life are very limited, making compact electric vehicles unable to become mainstream. Nowadays, most of the lithium batteries used in cars are too heavy, expensive, and consume power quickly. Therefore, new battery materials need to have better performance, longer service life and safe energy storage devices. However, the development of such new materials requires a lot of money and time.

　　In the Fraunhofer Electric Vehicle System Research (FSEM) project in Germany, researchers from the Fraunhofer Institute for Industrial Mathematics in Kaiserslautern, Germany are currently developing a lithium battery simulation software that will Accelerate the development process of new material batteries and improve the efficiency of battery use. The software is called "BEST", short for Battery and Electrochemistry Simulation Tool.

　　Lithium battery consists of two porous electrode plates. A separator containing electrolyte separates the two electrode plates. When the battery is charged and discharged, lithium ions will flow between the electrodes. Jochen Zausch, a scientist at the Fraunhofer Institute for Industrial Mathematics in Kaiserslautern, Germany, explained: "The performance of the battery depends on the materials used in the components, and these materials need to be coordinated with each other. Using our software simulation tools can Combine different materials according to your own ideas until the ideal combination is achieved, without the need for repeated testing as in the past."

　　Researchers at the institute simulated the structure of the entire battery, the flow of lithium ions, and the reaction process at the macro and micro levels. JochenZausch said: "We can show the microstructure of the electrode plate, each 10 micron hole is clearly visible, which is not achieved by other current technologies, and the position and shape of the electrode plate can also be changed." By solving the problem of the three-dimensional structure of the electrode plate, some battery parameters such as the concentration of lithium ions and current density can be calculated. The institute is currently calculating these parameters. Current distribution is an important indicator of battery heat. Therefore, the software can also accurately find hot spots that may cause the battery to overheat and burn. In addition, the software can effectively evaluate the aging effect of the battery, because changes in battery temperature will affect its service life. Scientists also plan to upgrade the software program to include the aging model to facilitate the smooth progress of the research.

　　JochenZausch concluded by saying: "Ultimately, the software will help car manufacturers and energy storage equipment manufacturers make more powerful, safer, and more applicable batteries, thereby improving the acceleration performance of cars." The software will be unveiled at Hannover Messe from April 4th to April 8th this year.